Judd Asher Nelson (born November 28, 1959) is an American actor. He is best known for his roles as John Bender in The Breakfast Club, Alec Newbary in St. Elmo's Fire, and Jack Richmond in Suddenly Susan.Nelson was born in Portland, Maine, the son of Jewish-American parents Merle (née Royte), a court mediator and former member of the Maine state legislature, and Leonard Nelson, a corporate lawyer who was the first Jewish president of the Portland Symphony Orchestra. He has two sisters, Eve and Julie. He went to school at St. Paul's School in Concord, New Hampshire and Waynflete School in Portland, Maine, and studied at Haverford College in Pennsylvania, leaving part-way through his sophomore year. He subsequently moved to Manhattan where he studied acting with Stella Adler.
Source : Wikipedia.com